I think this is a great idea!
I, for one, am the type of person who likes to let others know when their product or organisation is doing something well, so I'd probably fill your book up!! :rotfl: Hopefully the parents will use this book as an opportunity to point out the positives about Little Apples and not just the negatives - and I'm sure there are none of those.
Good luck with it and let us know how you get on.